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Head-to-Head Comparison
Grammarly vs Notion AI
An honest, side-by-side breakdown of pricing, features, and security — so you can pick the right tool.
Published Last updated
- Grammarly and Notion AI start at the same paid price, £10/mo.
- On privacy, Notion AI offers GDPR compliance where Grammarly does not.
- Grammarly is best for teams building AI writing into their products; Notion AI for teams building AI productivity into their products.
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Grammarly
AI Writing
8.1/ 10
Free · Free tier
Best for teams building AI writing into their products
Visit GrammarlySee all AI Writing Tools →
Notion AI
AI Productivity
8.0/ 10
Free · Free tier
Best for teams building AI productivity into their products
Visit Notion AISee all AI Productivity Tools →Some “Visit” links are affiliate links. How we earn →
Feature comparison
| Feature | Grammarly | Notion AI |
|---|---|---|
| CompareMyAI score | 8.1 / 10 | 8.0 / 10 |
| Free tier | ||
| API access | ||
| Open source | ||
| Enterprise ready | ||
| GDPR compliant | ||
| Vendor holds SOC 2 | ||
| Vendor holds ISO 27001 | ||
| MFA supported | ||
| Trains on your data | Yes |
Certifications may only cover business or enterprise plans. Check the vendor’s trust page for your plan.
Grammarly comes out ahead — and you can try it free.
Try Grammarly freeAffiliate link · how we earn
Pricing
Price checked with vendor on
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FreeFree
EnterpriseContact sales
Always check the provider's site for the latest pricing.
Pros & cons
Grammarly
Pros
- +SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
- +Works across browser, desktop, Word, Google Docs, and email with one install
- +Pro tier confirmed at £10/mo in GBP — transparent UK pricing
- +Explicit opt-out from AI model training available in account settings
Cons
- −Trains on user writing by default — opt-out required
- −GDPR compliance not explicitly confirmed on accessed official pages
- −Free AI prompt limit (100/mo) may feel restrictive for daily users
Notion AI
Pros
- +Deeply integrated into Notion workspace
- +Excellent for summarising and drafting within documents
- +Good value if already using Notion
Cons
- −Limited value outside the Notion ecosystem
- −Not a standalone AI tool
- −Requires Notion subscription
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly takes the overall edge, though Notion AI offers GDPR compliance and a no-training-on-your-data policy. Grammarly scores 8.1/10 to Notion AI's 8.0/10. Pick Notion AI if GDPR compliance matters — Grammarly takes it overall on our scoring, but the gap is narrow.
Frequently asked questions
Which is cheaper, Grammarly or Notion AI?
Grammarly and Notion AI start at the same paid price of £10/mo. Your choice comes down to features and fit rather than headline price. Prices are each vendor's published figures and can change.
Does Grammarly train on your data?
Based on published vendor information, Grammarly may use your data to help train its models. Training is sometimes opt-out, or switched off on paid and business plans, so review the privacy settings in your account.
Does Notion AI train on your data?
Based on published vendor information, Notion AI does not train its models on your data. Policies can differ by plan and change over time, so it is worth confirming the current terms on the vendor's site.
Are Grammarly and Notion AI GDPR compliant?
Notion AI states it is GDPR compliant, while Grammarly is not recorded as GDPR compliant in our data. Confirm the current position with each vendor if GDPR compliance is important for your use.
Do Grammarly and Notion AI have a free tier?
Yes — both Grammarly and Notion AI offer a free tier, so you can try each one before committing to a paid plan. Free tiers usually come with usage limits.